Sennheiser 509295 – Spectera MADI Card Optical
Sennheiser 509295 – Spectera MADI Card Optical is backordered and will ship as soon as it is back in stock.
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Product Overview
The Sennheiser 509295 is the OM (optical multimode) variant of the Spectera MADI Card, an optional expansion card that adds MADI audio I/O to the Spectera Base Station over a fiber-optic connection. It installs into the base station's expansion slot and provides MADI (AES10) connectivity for facilities that route audio over optical MADI. As a Spectera MADI expansion card, it lets integrators tie the base station's 32-in / 32-out audio into fiber-based infrastructure for broadcast and large-venue routing. It also supports optional redundant MADI audio I/O as part of Spectera's built-in redundancy features.
Product Description
This MADI card is an official Sennheiser accessory for the Spectera Base Station, the central 1RU hardware of the Spectera bidirectional wireless platform. It adds an optical MADI interface to the base station, carrying up to 32 input and 32 output channels over the AES10 MADI standard.

The OM variant uses an optical multimode connection, the preferred choice for longer MADI runs and installations that benefit from fiber's immunity to electrical interference. By adding MADI alongside the base station's standard Dante networking, the card gives integrators a second, independent audio transport, and it can be configured for redundant MADI audio I/O so a single transport failure does not interrupt the signal path. The card installs into the base station's expansion slot, keeping all I/O consolidated within the 1RU chassis. For facilities standardized on optical MADI, this card is the direct way to bring Spectera's 64-channel wireless capacity into the existing fiber audio network. Sennheiser also offers a BNC (coaxial) variant of the MADI card for installations that use copper MADI cabling.
Key Features
- MADI Expansion — The card adds MADI (AES10) audio I/O to the Spectera Base Station for 32 in / 32 out connectivity.
- Optical Multimode Connection — The OM variant uses fiber-optic MADI, well suited to longer runs and interference-prone environments.
- Redundant MADI Support — The card can be configured for redundant MADI audio I/O as part of Spectera's built-in redundancy.
- Slot-In Installation — The card installs into the base station's expansion slot, keeping all I/O within the 1RU chassis.
- Network Flexibility — MADI complements the base station's standard Dante networking with a second, independent audio transport.
- Genuine Sennheiser Accessory — This is an official Spectera expansion card for consistent fit and performance.
Technical Specifications
| Manufacturer Part Number (SKU) | 509295 |
| Product Type | Wireless Microphone Systems (Expansion Card) |
| Function | MADI (AES10) audio I/O expansion card |
| Connection | Optical multimode (OM) |
| Channels | 32 in / 32 out |
| Redundancy | Supports redundant MADI audio I/O |
| Variant | OM optical (BNC coaxial variant also available) |
| Compatibility | Sennheiser Spectera Base Station |
| Brand | Sennheiser |
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